Figure 6. (a)Self-charging performance of the ZnO@Mo-Fe-MnO2 NA based SCSPC devices. (b)Self-charging performance of the CC@Mo-Fe-MnO2 based SCSPC devices. (c)Self-charging curves resulting from residual stress, (d)self-charging performance with a 1 N force, (e) self-charging performance with a 10 N force, and (f) stepwise self-charging curve of a ZnO@Mo-Fe-MnO2 NA based SCSPC device.